Mastering Xamarin.Forms - Second Edition

The ViewModel-centric navigation

As previously discussed, the ViewModel-centric approach alleviates a ViewModel from having any dependencies on the specific implementation of individual pages. In a default Xamarin.Forms solution, this might not appear to be such a big deal, but consider a situation where pages were self-contained in their own library—the library containing ViewModels probably wouldn't have a reference to that library. This is typical of a traditional Xamarin-based multi-platform solution architecture and also a good practice to follow.

Since a ViewModel doesn't navigate directly to a page, it will navigate to a page via the page's ViewModel. This means that when implementing this approach, there is a need to build a relationship, ...